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Table 6 Correlation analysis of the differences between preintervention and postintervention (Delta, Δ) of oxidative stresses, antioxidative capacity and clinical outcomes in the serum samples of group B

From: Effect of vitamin E on oxidative stress level in blood, synovial fluid, and synovial tissue in severe knee osteoarthritis: a randomized controlled study

   Δ WOMAC Δ KSS Δ MDA Δ TEAC Δ Vit E Δ Nitrite
Δ WOMAC C* 1 −0.08 0.31 −0.40 −0.09 −0.02
P** - 0.69 0.09 0.03* 0.62 0.91
Δ KSS C* −0.08 1 −0.16 0.21 −0.10 −0.17
P** 0.69 - 0.40 0.26 0.96 0.35
Δ MDA C* 0.31 −0.16 1 −0.38 −0.22 −0.03
P** 0.09 0.40 - 0.04* 0.24 0.89
Δ TEAC C* −0.40 0.21 −0.38 1 0.10 0.25
P** 0.03 0.26 0.04 - 0.58 0.18
Δ Vit. E C* −0.09 −0.10 −2.2 0.10 1 0.09
P** 0.62 0.96 0.24 0.58 - 0.61
Δ Nitrite C* −0.02 −0.17 −0.03 0.25 0.09 1
P** 0.91 0.35 0.89 0.18 0.61 -
  1. C* = Pearson correlation
  2. P** = p value